How To Fix LD409 - Segments with successors cannot be defined as sort buffers

SAP Error Message - Details

• Message type: E = Error

• Message class: LD - Logistics Automotive Line Design

• Message number: 409

• Message text: Segments with successors cannot be defined as sort buffers

What causes this issue?

You cannot define a line segment as a sort buffer if it is followed by
further line segments on a lower hierarchy level.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message LD409 - Segments with successors cannot be defined as sort buffers ?

  The SAP error message LD409 indicates that there is an issue with defining sort buffers for segments that have successors in the context of logical database (LDB) processing. This error typically arises when you are trying to define a sort buffer for a segment that has dependent segments (successors) in the logical database structure.
  Cause:
  The primary cause of this error is that SAP does not allow segments with successors to be defined as sort buffers. This is because sort buffers are intended for segments that do not have any dependent segments, as the sorting process can interfere with the hierarchical structure of the data.
  Solution:
  To resolve the LD409 error, you can take the following steps:
  
  
  Review the Logical Database Structure: Check the structure of your logical database and identify the segments that are defined as sort buffers. Ensure that these segments do not have any successors.
  
  
  Modify Segment Definitions: If you find that a segment with successors is defined as a sort buffer, you will need to remove the sort buffer definition for that segment. Instead, consider using a different segment that does not have successors for sorting purposes.
  
  
  Reorganize Data Retrieval Logic: If sorting is essential for your application, you may need to reorganize your data retrieval logic to handle sorting at a different level or in a different way, such as in the application layer after data retrieval.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for more detailed guidance on logical databases and sort buffers. This can provide insights into best practices and alternative approaches.
  
  
  Testing: After making changes, test the logical database to ensure that the error is resolved and that the data is being retrieved and sorted as expected.
  
  
  Related Information:
  
  Logical Databases: These are used in SAP to provide a structured way to access data from the database. They define a hierarchy of data segments and their relationships.
  Sort Buffers: Sort buffers are used to optimize the retrieval of data by sorting it before it is processed or displayed.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context or solutions.
  
  If you continue to experience issues after following these steps, consider reaching out to SAP support or consulting with an SAP expert for further assistance.